MM-62500 - Apply Delete check on commands (#29896)

* apply delete check on commands, add tests

* combine tests

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Co-authored-by: Mattermost Build <build@mattermost.com>

server/i18n/en.json

@@ -603,6 +603,10 @@
     "id": "api.command.execute_command.create_post_failed.app_error",
     "translation": "Command '{{.Trigger}}' failed to post response. Please contact your System Administrator."
   },
+  {
+    "id": "api.command.execute_command.deleted.error",
+    "translation": "Can not run command in deleted channel."
+  },
   {
     "id": "api.command.execute_command.failed.app_error",
     "translation": "Command with a trigger of '{{.Trigger}}' failed."